Optical-storage-firewood switching system and grid-connected box

Abstract

The invention discloses an optical-storage-firewood switching system and a grid-connected box, the optical-storage-firewood switching system comprises a grid-connected box body, an upper shell, a lower shell and a plurality of photovoltaic panels, the photovoltaic panels are arranged outside the upper shell in a rectangular structure, outer frames are installed outside the photovoltaic panels, the outer frames are fixedly connected with the upper shell through hinge pieces, rectangular openings are formed in the side surfaces of the upper shell, and the rectangular openings are connected with the lower shell through hinge pieces. Limiting seats for limiting the photovoltaic panels are arranged in the rectangular openings, a plurality of positioning plates abutting against the inner side faces of the limiting seats are distributed in the upper shell in a rectangular structure mode, and supporting sealing pieces are perpendicularly installed at the corners of the upper shell and the corners of the lower shell. The photovoltaic grid-connected box is simple in structure, the photovoltaic panel has multiple use functions and is used in combination with the switching system, the photovoltaic panel can be automatically closed in rainy days while playing a role in power supply and sun shading, the grid-connected box body can be covered and sealed in combination with the upper shell and the lower shell, external rainwater is prevented from making contact with the grid-connected box body, and the service life of the grid-connected box is prolonged. And the heat of the grid-connected box can dry the water vapor entering the grid-connected box before.

Description

Technical Field

[0001] This invention relates to the field of grid connection box technology, specifically to a photovoltaic-storage-diesel switching system and a grid connection box. Background Technology

[0002] A grid-connected box is a key device in a solar photovoltaic power generation system used to manage and control the direct current (DC) output from photovoltaic panels. It converts the DC power into AC power that meets the requirements before connecting it to the power grid, thus realizing the connection between renewable energy power generation equipment and the grid.

[0003] However, current grid-connected boxes have simple structures, lack switching functions, and cannot provide additional power when photovoltaic power generation is insufficient, resulting in insufficient power supply to connected equipment, which affects the application of the equipment. Furthermore, they lack protection, especially outdoor grid-connected boxes, which are prone to rainwater entering the interior during heavy rain, causing damage to the grid-connected boxes and affecting their service life. Summary of the Invention

[0004] The technical problem to be solved by the present invention is to provide a photovoltaic-storage-diesel switching system and a grid-connected box, which can make better use of power through switching and can protect the grid-connected box body through self-closing, so as to solve the problems mentioned in the background art.

[0005] This invention is achieved through the following technical solution: a photovoltaic-storage-diesel grid-connected box, comprising a grid-connected box body, an upper shell, a lower shell, and multiple photovoltaic panels. The upper shell and the lower shell are fitted onto the grid-connected box body, one on top of the other. The multiple photovoltaic panels are arranged in a rectangular structure on the outside of the upper shell. Each photovoltaic panel is fitted with an outer frame, which is fixedly connected to the upper shell by hinges. Each side of the upper shell has a rectangular opening, and each rectangular opening has a limiting seat for limiting the photovoltaic panel. The inside of the upper shell has multiple positioning plates arranged in a rectangular structure to abut the inner side of the limiting seats. The end face of the upper shell has a positioning port, and the positioning port has a linkage mechanism for automatically controlling the closing of the photovoltaic panel. Supporting seals are vertically installed at the corners of the upper shell and the lower shell.

[0006] As a preferred technical solution, the linkage mechanism includes a water storage tank, multiple fixing plates, and multiple compression springs. The middle of the positioning plate is bent to form a "U"-shaped clearance part, and the end of the positioning plate away from the grid connection box body is bent to form a fixing part. The fixing part is installed on the bottom surface of the water storage tank, and the fixing plates are all installed on the corners inside the upper shell. One end of each fixing plate extends to the bottom of the water storage tank, and one end of each compression spring is installed on the water storage tank, while the other end is installed on the fixing plate.

[0007] As a preferred technical solution, the cross-section of the limiting seat is arranged in a fan shape. The end of the limiting seat located inside the upper shell is fixedly connected to the upper shell through a torsion spring hinge. The torsion spring hinge is arranged on both sides of the limiting plate. A first rubber layer is installed on the side of the outer frame facing the lower shell. The end of the limiting seat located outside the frame is in contact with the first rubber layer on the outer frame.

[0008] As a preferred technical solution, multiple connecting rods are installed between the upper shell and the grid connection box, and between the lower shell and the grid connection box. Drainage holes are provided on the bottom surface of the lower shell, and multiple fixing seats are also installed on the bottom surface of the lower shell. Multiple straight slots are provided on the fixing seats.

[0009] As a preferred technical solution, grooves are provided on the sides of the lower shell, and magnets for adsorbing the outer frame are installed in the grooves.

[0010] As a preferred technical solution, the water storage tank has multiple drainage holes on one side. The drainage holes are close to the bottom surface of the inner ring of the water storage tank and the drainage outlet is set higher than the top surface of the upper shell. The upper shell has baffles on the inside directly opposite the drainage holes. One end of the baffle is bent and installed on the inner wall of the upper shell. A sealing layer is installed on one side of the baffle. The side of the sealing layer is flush with the inner side of the positioning port.

[0011] As a preferred technical solution, the distance between the supporting seals matches the width of the outer frame, and a second rubber layer is installed on both sides of the supporting seals.

[0012] A photovoltaic-storage-diesel switching system includes a grid-connected box and a switching system linked to the grid-connected box. The switching system includes the photovoltaic panel, which is used to generate electricity and preferentially provide power to the load.

[0013] An energy storage system module is connected to the photovoltaic panel to store excess photovoltaic power and, by connecting to a load, provides power to the load when photovoltaic power generation is insufficient and charges the energy storage system when photovoltaic power generation is excessive.

[0014] A diesel generator module is connected to the energy storage system module and the load via a power path and serves as a backup power source. When the photovoltaic panel and energy storage system module cannot meet the load demand, the diesel generator module starts to provide power to the load.

[0015] An energy management system is connected to a photovoltaic panel, an energy storage system module, and a diesel generator module. The system is used to detect the power status of each module and automatically switch the power supply path according to load demand.

[0016] The beneficial effects of this invention are:

[0017] 1. The grid-connected box is equipped with multiple photovoltaic panels, which can effectively convert sunlight into electrical energy and distribute the electrical energy with the grid-connected box. The photovoltaic panels also increase the shading effect.

[0018] 2. While providing power and shading, the photovoltaic panels can automatically close on rainy days. Combined with the upper and lower shells, they can cover and seal the grid-connected box body, preventing external rainwater from contacting the grid-connected box body. The heat of the grid-connected box itself can dry the moisture that entered earlier. The gas generated during the drying process can be discharged through the drainage holes, ensuring the normal use of the grid-connected box body on rainy days and increasing its service life.

[0019] 3. The photovoltaic panels, energy storage system modules, and diesel generator modules can be switched between each other to prepare for unforeseen circumstances, increasing adaptability. Attached Figure Description

[0020] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0021] Figure 1 This is a schematic diagram of the overall structure of the present invention;

[0022] Figure 2 This is a side view of the present invention;

[0023] Figure 3 This is a schematic diagram of the structure of the present invention after the water storage tank is removed;

[0024] Figure 4 This is a schematic diagram of the structure of the present invention after further removal of the upper shell;

[0025] Figure 5 This is a circuit system diagram of the present invention.

[0026] The components include: 1. Grid-connected box body; 2. Upper shell; 3. Lower shell; 4. Outer frame; 5. Photovoltaic panel; 6. Magnet; 7. Support sealing component; 8. Water storage tank; 9. Drain hole; 10. Fixing seat; 11. Limiting seat; 12. Drain hole; 13. Fixing plate; 14. Compression spring; 15. Baffle; 16. Positioning plate; 17. Clearance part. Detailed Implementation

[0027] Embodiments of the present invention are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and should not be construed as limiting the present invention.

[0028] All features disclosed in this specification, or all steps in all disclosed methods or processes, may be combined in any way, except for mutually exclusive features and / or steps.

[0029] Any feature disclosed in this specification (including any appended claims, abstract, and drawings) may be replaced by other equivalent or similar features, unless specifically stated otherwise. That is, unless specifically stated otherwise, each feature is merely one example of a series of equivalent or similar features.

[0030] like Figure 1 , Figure 2 , Figure 3 and Figure 4 As shown, a photovoltaic-storage-diesel grid-connected box according to the present invention includes a grid-connected box body 1, an upper shell 2, a lower shell 3, and multiple photovoltaic panels 5. The upper shell 2 and the lower shell 3 are fitted onto the grid-connected box body 1 one above the other. The multiple photovoltaic panels 5 are arranged in a rectangular structure on the outside of the upper shell 2. Each photovoltaic panel 5 is equipped with an outer frame 4, which is fixedly connected to the upper shell 2 by a hinge. Each side of the upper shell 2 is provided with a rectangular opening, and each rectangular opening is provided with a limiting seat 11 to limit the position of the photovoltaic panel 5. The inside of the upper shell 2 is provided with multiple positioning plates 16 arranged in a rectangular structure to abut the inner side of the limiting seat 11. The end face of the upper shell 2 is provided with a positioning port, and the positioning port is provided with a linkage mechanism for automatically controlling the closing of the photovoltaic panel 5. Support sealing members 7 are vertically installed at the corners of the upper shell 2 and the lower shell 3.

[0031] In this embodiment, the linkage mechanism includes a water storage tank 8, multiple fixing plates 13, and multiple compression springs 14. The middle of the positioning plate 16 is bent to form a U-shaped clearance part 17. The end of the positioning plate 16 away from the grid-connected box body 1 is bent to form a fixing part. The fixing part is installed on the bottom surface of the water storage tank 8. The fixing plates 13 are all installed on the corners inside the upper shell 2. One end of the fixing plates 13 extends to the bottom of the water storage tank 8. One end of the compression springs 14 is installed on the water storage tank 8, and the other end is installed on the fixing plates 13.

[0032] In this embodiment, the cross-section of the limiting seat 11 is arranged in a fan shape. The end of the limiting seat 11 located inside the upper shell 2 is fixedly connected to the upper shell 2 by a torsion spring hinge. The torsion spring hinge is arranged on both sides of the limiting plate. A first rubber layer is installed on the side of the outer frame 4 facing the lower shell 3. The end of the limiting seat 11 located outside the outer frame 4 is in contact with the first rubber layer on the outer frame 4. After the photovoltaic panel is closed, the sealing between the outer frame and the upper and lower shells is increased by the first rubber layer.

[0033] In this embodiment, multiple connecting rods are installed between the upper shell 2 and the grid connection box, and between the lower shell 3 and the grid connection box. Drainage holes 12 are provided on the bottom surface of the lower shell 3, and multiple fixing seats 10 are also installed on the bottom surface of the lower shell 3. Multiple straight slots are provided on the fixing seats 10.

[0034] In this embodiment, the lower shell 3 is provided with grooves on its side, and magnets 6 for adsorbing the outer frame 4 are installed in the grooves. After the photovoltaic panel is closed, the inner side of the outer frame can be adsorbed with the magnets to ensure the stability of the photovoltaic panel after it is closed.

[0035] In this embodiment, a plurality of drain holes 12 are provided on one side of the water storage tank 8. The drain holes 12 are close to the bottom surface of the inner ring of the water storage tank 8, and the drain outlet is set higher than the top surface of the upper shell 2. A baffle 15 is provided inside the upper shell 2 directly opposite the drain holes 12. One end of the baffle 15 is bent and installed on the inner wall surface of the upper shell 2. A sealing layer is installed on one side of the baffle 15. The side of the sealing layer is flush with the inner side of the positioning port.

[0036] As the water tank moves downward, the drain hole comes into contact with the sealing layer, sealing the outer side of the drain hole and preventing water leakage inside the upper shell. With the appearance of sunlight, the water remaining inside the water tank evaporates. As the water volume decreases, the weight of the water tank decreases, and the return of the water tank is achieved by the rebound of the compression spring.

[0037] In this embodiment, the distance between the supporting seals 7 matches the width of the outer frame 4, and a second rubber layer is installed on both sides of the supporting seals 7. After the photovoltaic panel is closed, the second rubber layer increases the sealing between it and the outer frame.

[0038] During normal use, the bottom of the outer frame can be supported by the limiting seat, and one end of the outer frame is pressed against the side of the upper shell to ensure the stability of the installation of the outer frame and the photovoltaic panel. The photovoltaic panel can provide a shading effect and convert sunlight into electrical energy. The system connection is switched to complete the distribution of the electrical energy generated by the photovoltaic panel.

[0039] In this system, once it rains, the rainwater can be received by the water storage tank. If the amount of rainwater entering is greater than the amount of rainwater discharged from the drain hole, the water storage tank will become heavier due to the rainwater entering. After becoming heavier, the water storage tank can move downward along the positioning port. The movement of the water storage tank drives the positioning plate. After the avoidance part on the positioning plate comes into contact with the top surface of the grid connection box body, the avoidance part is set opposite to the limit seat. Through the torsion of the torsion spring hinge, the limit seat can be directly driven to rotate towards the inside of the upper shell.

[0040] After the limit seat is removed, the outer frame and photovoltaic panel can rotate downwards around the hinge, which is a damping hinge that reduces the speed of the photovoltaic panel's downward rotation until the inner side of the photovoltaic panel abuts against the outer sides of the upper and lower shells, while the edge of the photovoltaic panel abuts against the side of the supporting seal. The upper shell, lower shell, outer frame, and supporting seal can completely seal the grid-connected box body, preventing external rainwater from contacting it. After sealing, the heat generated by the grid-connected box body can be concentrated inside and transferred through heat conduction via rainwater. The internal heat can dry the previously entered moisture, and the gas generated during the drying process can be discharged through the drain hole, ensuring the normal use of the grid-connected box body in rainy weather and increasing its service life.

[0041] like Figure 5 As shown, a photovoltaic-storage-diesel switching system includes a grid-connected box and a switching system linked to the grid-connected box body 1. The switching system includes the photovoltaic panel 5, which is used to generate electricity and prioritize providing power to the load.

[0042] An energy storage system module is connected to the photovoltaic panel to store excess photovoltaic power and, by connecting to a load, provides power to the load when photovoltaic power generation is insufficient and charges the energy storage system when photovoltaic power generation is excessive.

[0043] A diesel generator module is connected to the energy storage system module and the load via a power path and serves as a backup power source. When the photovoltaic panel and energy storage system module cannot meet the load demand, the diesel generator module starts to provide power to the load.

[0044] An energy management system is connected to a photovoltaic panel, an energy storage system module, and a diesel generator module. The system is used to detect the power status of each module and automatically switch the power supply path according to load demand.

[0045] The power system mainly consists of photovoltaic power generation modules, energy storage system modules, diesel generator modules, power dispatching modules, and multiple monitoring instruments. As shown in the circuit diagram, the photovoltaic power generation modules are connected to the power system via three inverters (Inverter 1, Inverter 2, and Inverter 3). The inverters convert the direct current generated by the photovoltaic power generation into alternating current, prioritizing its supply to the loads. The output of the photovoltaic power generation modules is monitored for its power status via Tables 2 and 3, and connected to the system's data acquisition device via an RS485 bus to achieve real-time power monitoring and dispatching.

[0046] When photovoltaic (PV) power generation is insufficient, the system switches to the energy storage system module. As shown in the circuit diagram, the energy storage system is connected to the system via Table 4 and provides power to the load through the power path. The energy storage system works in conjunction with the PV power generation module to ensure that when PV power generation is excessive, the excess power can be stored in the energy storage system through the inverter. When PV power is insufficient, the energy storage system releases the stored energy for the load to use. The circuit diagram shows that the energy storage system is connected to external monitoring equipment via an RS485 bus to ensure real-time monitoring of the power storage and release status.

[0047] When the photovoltaic power generation and energy storage system cannot meet the load demand, the diesel generator module starts as a backup power source. In the circuit diagram, the diesel generator is connected to Table 5, and its operating status is monitored in real time by the control module (HGM9510N) to ensure that it provides power to the load when needed. The diesel generator module also connects to other modules via an RS485 bus to ensure communication with other devices in the system and coordinate power supply.

[0048] The power dispatch module, as the core control module of the entire system, is connected to the photovoltaic power generation module, energy storage system module, and diesel generator module via an RS485 bus in the circuit diagram. This module automatically switches the power path based on the status of different power sources (such as photovoltaic power generation, energy storage system power, and load demand). The system prioritizes photovoltaic power generation; when photovoltaic power is insufficient, it automatically switches to the energy storage system; and when the energy storage system power is also insufficient, the diesel generator starts to provide supplementary power to the load.

[0049] As shown in the circuit diagram, the entire system uses an AMC72L E4 / KC meter to monitor the power status of each power module in real time, and transmits this data to the power distribution module via an RS485 communication bus to ensure that the load always receives a stable power supply. Especially when photovoltaic power generation is excessive, the excess power is stored in the energy storage system, and when photovoltaic power generation is insufficient, the power distribution module automatically switches to the energy storage system or diesel generators for supplementary power. This combined design not only improves energy utilization efficiency but also ensures the continuous and stable operation of the system under various conditions.

[0050] The above description is merely a specific embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any changes or substitutions conceived without inventive effort should be included within the scope of protection of the present invention. Therefore, the scope of protection of the present invention should be determined by the scope defined in the claims.

Claims

1. A photovoltaic-storage-diesel grid-connected box, characterized in that: The system includes a grid-connected box body (1), an upper shell (2), a lower shell (3), and multiple photovoltaic panels (5). The upper shell (2) and the lower shell (3) are fitted onto the grid-connected box body (1), one on top of the other. The multiple photovoltaic panels (5) are arranged in a rectangular structure on the outside of the upper shell (2). Each photovoltaic panel (5) is equipped with an outer frame (4), which is fixedly connected to the upper shell (2) by a hinge. Each side of the upper shell (2) has a rectangular opening, and each rectangular opening has a limiting seat (11) that limits the photovoltaic panel (5). The interior of the upper shell (2) has multiple positioning plates (16) that abut the inner side of the limiting seat (11). The end face of the upper shell (2) has a positioning port, and the positioning port has a linkage mechanism that automatically controls the closing of the photovoltaic panel (5). Each corner of the upper shell (2) and the lower shell (3) is vertically equipped with a support sealing member (7).

2. The solar-storage-diesel grid-connected box according to claim 1, characterized in that: The linkage mechanism includes a water tank (8), multiple fixing plates (13) and multiple compression springs (14). The middle of the positioning plate (16) is bent to form a U-shaped clearance part (17). The end of the positioning plate (16) away from the grid connection box body (1) is bent to form a fixing part. The fixing part is installed on the bottom surface of the water tank (8). The fixing plates (13) are all installed on the corners inside the upper shell (2). One end of the fixing plates (13) extends to the bottom of the water tank (8). One end of the compression springs (14) is installed on the water tank (8), and the other end is installed on the fixing plate (13).

3. The photovoltaic-storage-diesel grid-connected box according to claim 1, characterized in that: The cross-section of the limiting seat (11) is arranged in a fan shape. The end of the limiting seat (11) located inside the upper shell (2) is fixedly connected to the upper shell (2) by a torsion spring hinge. The torsion spring hinge is arranged on both sides of the limiting plate. The outer frame (4) facing the lower shell (3) is equipped with a first rubber layer. The end of the limiting seat (11) located outside the outer frame is in contact with the first rubber layer on the outer frame (4).

4. The photovoltaic-storage-diesel grid-connected box according to claim 1, characterized in that: Multiple connecting rods are installed between the upper shell (2) and the grid connection box, and between the lower shell (3) and the grid connection box. Drainage holes (12) are provided on the bottom surface of the lower shell (3). Multiple fixing seats (10) are also installed on the bottom surface of the lower shell (3). Multiple straight slots are provided on the fixing seats (10).

5. The solar-storage-diesel grid-connected box according to claim 1, characterized in that: The lower shell (3) has grooves on its side, and magnets (6) for adsorbing the outer frame (4) are installed in the grooves.

6. The solar-storage-diesel grid-connected box according to claim 2, characterized in that: Multiple drain holes (12) are provided on one side of the water tank (8). The drain holes (12) are close to the bottom surface of the inner ring of the water tank (8), and the drain outlet is set higher than the top surface of the upper shell (2). The interior of the upper shell (2) is provided with baffles (15) directly opposite the drain holes (12). One end of the baffle (15) is bent and installed on the inner wall of the upper shell (2). A sealing layer is installed on one side of the baffle (15), and the side of the sealing layer is flush with the inner side of the positioning port.

7. The photovoltaic-storage-diesel grid-connected box according to claim 1, characterized in that: The distance between the support seals (7) matches the width of the outer frame (4), and a second rubber layer is installed on both sides of the support seals (7).

8. A light-storage-diesel switching system, characterized in that: The grid-connected box as described in any one of claims 1-7 and the switching system linked with the grid-connected box body (1) are included. The switching system includes the photovoltaic panel (5), which is used to generate electricity and provide power to the load first. An energy storage system module is connected to the photovoltaic panel to store excess photovoltaic power and, by connecting to a load, provides power to the load when photovoltaic power generation is insufficient and charges the energy storage system when photovoltaic power generation is excessive. A diesel generator module is connected to the energy storage system module and the load via a power path and serves as a backup power source. When the photovoltaic panel and energy storage system module cannot meet the load demand, the diesel generator module starts to provide power to the load. An energy management system is connected to a photovoltaic panel, an energy storage system module, and a diesel generator module. The system is used to detect the power status of each module and automatically switch the power supply path according to load demand.

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